Home / 112,839.31-155,712.46-65,089.81

Finding the Fourth Proportional to 112,839.31, 155,712.46 and 65,089.81

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Solution

The fourth proportional to 112,839.31, 155,712.46 and 65,089.81 is: 89,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,839.31 : 155,712.46 = 65,089.81 : x
  2. Step 2: Convert to fraction form
    112,839.31/155,712.46 = 65,089.81/x
  3. Step 3: Cross multiply
    112,839.31x = 155,712.46 × 65,089.81
  4. Step 4: Simplify right side
    112,839.31x = 10,135,293,332.02
  5. Step 5: Solve for x
    x = 10,135,293,332.02/112,839.31
  6. Step 6: Final answer
    x = 89,820.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.